Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/package.mo", uses=false)
Using package Buildings with version 11.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/package.mo)
Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo)
Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo)
Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo)
Running command: "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD,fileNamePrefix="Buildings_latest_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepUp_YD",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD,fileNamePrefix="Buildings_latest_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepUp_YD",fmuType="me",version="2.0",platforms={"static"})
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001725/0.001725, allocations: 108 kB / 15.61 MB, free: 148 kB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002668/0.002668, allocations: 197.6 kB / 16.53 MB, free: 6.699 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.339/1.339, allocations: 222.9 MB / 240.2 MB, free: 4.387 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/package.mo): time 2.704/2.704, allocations: 469.4 MB / 0.742 GB, free: 7.758 MB / 0.5919 GB
Notification: Performance of FrontEnd - loaded program: time 0.001278/0.001278, allocations: 66.53 kB / 0.9083 GB, free: 34.52 MB / 0.7169 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.263/0.2643, allocations: 159.1 MB / 1.064 GB, free: 14.52 MB / 0.8262 GB
Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD): time 0.02128/0.2856, allocations: 18.26 MB / 1.082 GB, free: 12.18 MB / 0.8419 GB
Notification: Performance of NFInst.instExpressions: time 0.01184/0.2975, allocations: 6.874 MB / 1.088 GB, free: 5.289 MB / 0.8419 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.001567/0.2991, allocations: 59.88 kB / 1.088 GB, free: 5.23 MB / 0.8419 GB
Notification: Performance of NFTyping.typeComponents: time 0.004039/0.3031, allocations: 1.459 MB / 1.09 GB, free: 3.77 MB / 0.8419 GB
Notification: Performance of NFTyping.typeBindings: time 0.003455/0.3066, allocations: 1.443 MB / 1.091 GB, free: 2.32 MB / 0.8419 GB
Notification: Performance of NFTyping.typeClassSections: time 0.003156/0.3098, allocations: 1.278 MB / 1.092 GB, free: 1.039 MB / 0.8419 GB
Notification: Performance of NFFlatten.flatten: time 0.005772/0.3155, allocations: 5.468 MB / 1.098 GB, free: 11.56 MB / 0.8575 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.009345/0.3249, allocations: 7.23 MB / 1.105 GB, free: 4.215 MB / 0.8575 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.003822/0.3288, allocations: 2.361 MB / 1.107 GB, free: 1.848 MB / 0.8575 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.004392/0.3332, allocations: 2.976 MB / 1.11 GB, free: 14.86 MB / 0.8731 GB
Notification: Performance of NFPackage.collectConstants: time 0.001426/0.3346, allocations: 0.5117 MB / 1.11 GB, free: 14.35 MB / 0.8731 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.003/0.3376, allocations: 1.272 MB / 1.112 GB, free: 13.08 MB / 0.8731 GB
Notification: Performance of NFScalarize.scalarize: time 0.00279/0.3404, allocations: 2.246 MB / 1.114 GB, free: 10.83 MB / 0.8731 GB
Notification: Performance of NFVerifyModel.verify: time 0.003462/0.3439, allocations: 2.187 MB / 1.116 GB, free: 8.633 MB / 0.8731 GB
Notification: Performance of NFConvertDAE.convert: time 0.006898/0.3508, allocations: 7.74 MB / 1.124 GB, free: 0.8711 MB / 0.8731 GB
Notification: Performance of FrontEnd - DAE generated: time 4.979e-06/0.3508, allocations: 0 / 1.124 GB, free: 0.8711 MB / 0.8731 GB
Notification: Performance of FrontEnd: time 1.523e-06/0.3508, allocations: 0 / 1.124 GB, free: 0.8711 MB / 0.8731 GB
Notification: Performance of Transformations before backend: time 0.0001035/0.351, allocations: 0 / 1.124 GB, free: 0.8711 MB / 0.8731 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 994
 * Number of variables: 994
Notification: Performance of Generate backend data structure: time 0.007412/0.3584, allocations: 3.827 MB / 1.127 GB, free: 12.98 MB / 0.8887 GB
Notification: Performance of prepare preOptimizeDAE: time 4.676e-05/0.3584, allocations: 12.03 kB / 1.127 GB, free: 12.97 MB / 0.8887 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0007588/0.3592, allocations: 0.5426 MB / 1.128 GB, free: 12.42 MB / 0.8887 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01332/0.3725, allocations: 2.411 MB / 1.13 GB, free: 10 MB / 0.8887 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.004902/0.3775, allocations: 2.167 MB / 1.132 GB, free: 7.793 MB / 0.8887 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002408/0.3777, allocations: 275.2 kB / 1.133 GB, free: 7.523 MB / 0.8887 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001072/0.3788, allocations: 344 kB / 1.133 GB, free: 7.188 MB / 0.8887 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01409/0.3929, allocations: 7.163 MB / 1.14 GB, free: 15.92 MB / 0.9044 GB
Notification: Performance of preOpt findStateOrder (simulation): time 7.157e-05/0.393, allocations: 7.938 kB / 1.14 GB, free: 15.91 MB / 0.9044 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004439/0.3935, allocations: 152 kB / 1.14 GB, free: 15.77 MB / 0.9044 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0004457/0.3939, allocations: 330.1 kB / 1.14 GB, free: 15.45 MB / 0.9044 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01563/0.4095, allocations: 7.047 MB / 1.147 GB, free: 8.387 MB / 0.9044 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03337/0.443, allocations: 26.68 MB / 1.173 GB, free: 11.52 MB / 0.9356 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.008421/0.4514, allocations: 4.996 MB / 1.178 GB, free: 6.23 MB / 0.9356 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.005993/0.4574, allocations: 2.596 MB / 1.181 GB, free: 3.617 MB / 0.9356 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0002754/0.4577, allocations: 143 kB / 1.181 GB, free: 3.461 MB / 0.9356 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.171e-05/0.4578, allocations: 60.56 kB / 1.181 GB, free: 3.391 MB / 0.9356 GB
Notification: Performance of pre-optimization done (n=208): time 4.739e-06/0.4578, allocations: 0 / 1.181 GB, free: 3.391 MB / 0.9356 GB
Warning: The linear system: 
1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2]
2 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1]
3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2]
4 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1]
[
  1.0 , 0.0 , 0.0 , -1.0 ;
  0.0 , 0.0 , 1.0 , -1.0 ;
  0.0 , 1.0 , -1.0 , 0.0 ;
  -1.0 , 1.0 , 0.0 , 0.0
]
  *
[
  line2.v1_n[1] ;
  line2.v2_n[1] ;
  line2.v2_p[1] ;
  line2.v1_p[1]
]
  =
[
  line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ;
  -loadRL.load1.v[1] ;
  line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ;
  -transformer.conv2.V2[1]
]
 might be structurally or numerically singular for variable line2.v1_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Notification: Performance of matching and sorting (n=271): time 0.1094/0.5672, allocations: 30.94 MB / 1.211 GB, free: 4.363 MB / 0.9669 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001069/0.5673, allocations: 243.6 kB / 1.211 GB, free: 4.078 MB / 0.9669 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002155/0.5695, allocations: 1.469 MB / 1.213 GB, free: 2.602 MB / 0.9669 GB
Notification: Performance of collectPreVariables (initialization): time 0.0003537/0.5699, allocations: 77.64 kB / 1.213 GB, free: 2.52 MB / 0.9669 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0008877/0.5708, allocations: 1.497 MB / 1.214 GB, free: 1.004 MB / 0.9669 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0009317/0.5717, allocations: 0.9204 MB / 1.215 GB, free: 72 kB / 0.9669 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.001344/0.5731, allocations: 0.628 MB / 1.216 GB, free: 15.43 MB / 0.9825 GB
Notification: Performance of setup shared object (initialization): time 8.559e-05/0.5732, allocations: 313 kB / 1.216 GB, free: 15.12 MB / 0.9825 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.005886/0.5791, allocations: 2.682 MB / 1.219 GB, free: 12.43 MB / 0.9825 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.006486/0.5856, allocations: 3.567 MB / 1.222 GB, free: 8.484 MB / 0.9825 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.01256/0.5981, allocations: 6.406 MB / 1.229 GB, free: 1.68 MB / 0.9825 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.012e-05/0.5982, allocations: 8 kB / 1.229 GB, free: 1.672 MB / 0.9825 GB
Warning: The linear system: 
1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2]
2 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1]
3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2]
4 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1]
[
  1.0 , 0.0 , 0.0 , -1.0 ;
  0.0 , 0.0 , 1.0 , -1.0 ;
  0.0 , 1.0 , -1.0 , 0.0 ;
  -1.0 , 1.0 , 0.0 , 0.0
]
  *
[
  line2.v1_n[1] ;
  line2.v2_n[1] ;
  line2.v2_p[1] ;
  line2.v1_p[1]
]
  =
[
  line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ;
  -loadRL.load1.v[1] ;
  line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ;
  -transformer.conv2.V2[1]
]
 might be structurally or numerically singular for variable line2.v1_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Notification: Performance of matching and sorting (n=410) (initialization): time 0.02861/0.6268, allocations: 10.98 MB / 1.239 GB, free: 6.586 MB / 0.9981 GB
Notification: Performance of prepare postOptimizeDAE: time 3.949e-05/0.6269, allocations: 17.09 kB / 1.239 GB, free: 6.57 MB / 0.9981 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.328e-05/0.6269, allocations: 24 kB / 1.239 GB, free: 6.547 MB / 0.9981 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.02036/0.6473, allocations: 5.576 MB / 1.245 GB, free: 0.9531 MB / 0.9981 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.5058/1.153, allocations: 0.9983 MB / 1.246 GB, free: 167.2 MB / 0.9981 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.04155/1.195, allocations: 28.18 MB / 1.273 GB, free: 156.6 MB / 0.9981 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004399/1.199, allocations: 0.5755 MB / 1.274 GB, free: 156.6 MB / 0.9981 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003747/1.199, allocations: 154.3 kB / 1.274 GB, free: 156.6 MB / 0.9981 GB
Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00744/1.207, allocations: 3.982 MB / 1.278 GB, free: 155.2 MB / 0.9981 GB
Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.00587/1.213, allocations: 3.528 MB / 1.281 GB, free: 153.4 MB / 0.9981 GB
Error: Initialization problem is structural singular. Please, check the initial conditions.
Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.08545/1.298, allocations: 24.67 MB / 1.305 GB, free: 144.1 MB / 0.9981 GB
Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.293e-05/1.298, allocations: 11.55 kB / 1.305 GB, free: 144.1 MB / 0.9981 GB
Warning: The linear system: 
1 : transformer.conv1.V2[2] = line2.v3_n[2] - line2.v1_n[2]
2 : line2.v3_n[2] - line2.v3_p[2] = line2.Z31[1] * line2.i1[2] + line2.Z31[2] * line2.i1[1] + line2.Z32[1] * line2.i2[2] + line2.Z32[2] * line2.i2[1] + line2.Z33[1] * line2.i3[2] + line2.Z33[2] * line2.i3[1]
3 : loadRL.load3.v[2] = line2.v3_p[2] - line2.v1_p[2]
4 : line2.v1_n[2] - line2.v1_p[2] = line2.Z11[1] * line2.i1[2] + line2.Z11[2] * line2.i1[1] + line2.Z12[1] * line2.i2[2] + line2.Z12[2] * line2.i2[1] + line2.Z13[1] * line2.i3[2] + line2.Z13[2] * line2.i3[1]
[
  1.0 , 0.0 , 0.0 , -1.0 ;
  0.0 , 0.0 , -1.0 , 1.0 ;
  0.0 , 1.0 , -1.0 , 0.0 ;
  1.0 , -1.0 , 0.0 , 0.0
]
  *
[
  line2.v1_n[2] ;
  line2.v1_p[2] ;
  line2.v3_p[2] ;
  line2.v3_n[2]
]
  =
[
  -transformer.conv1.V2[2] ;
  line2.Z31[1] * line2.i1[2] + line2.Z33[1] * line2.i3[2] + line2.Z33[2] * line2.i3[1] + line2.Z32[2] * line2.i2[1] + line2.Z32[1] * line2.i2[2] + line2.Z31[2] * line2.i1[1] ;
  -loadRL.load3.v[2] ;
  line2.Z11[1] * line2.i1[2] + line2.Z13[1] * line2.i3[2] + line2.Z13[2] * line2.i3[1] + line2.Z12[2] * line2.i2[1] + line2.Z12[1] * line2.i2[2] + line2.Z11[2] * line2.i1[1]
]
 might be structurally or numerically singular for variable line2.v3_n[2] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Warning: The linear system: 
1 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1]
2 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2]
3 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1]
4 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2]
[
  1.0 , 0.0 , 0.0 , -1.0 ;
  0.0 , 0.0 , 1.0 , -1.0 ;
  0.0 , 1.0 , -1.0 , 0.0 ;
  -1.0 , 1.0 , 0.0 , 0.0
]
  *
[
  line2.v2_p[1] ;
  line2.v2_n[1] ;
  line2.v1_n[1] ;
  line2.v1_p[1]
]
  =
[
  -loadRL.load1.v[1] ;
  line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ;
  -transformer.conv2.V2[1] ;
  line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2]
]
 might be structurally or numerically singular for variable line2.v1_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Notification: Performance of matching and sorting (n=410) (initialization_lambda0): time 0.02313/1.321, allocations: 10.53 MB / 1.316 GB, free: 135.5 MB / 0.9981 GB
Notification: Performance of prepare postOptimizeDAE: time 2.645e-05/1.322, allocations: 16 kB / 1.316 GB, free: 135.5 MB / 0.9981 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.666e-05/1.322, allocations: 31.75 kB / 1.316 GB, free: 135.5 MB / 0.9981 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.01456/1.336, allocations: 4.338 MB / 1.32 GB, free: 131.1 MB / 0.9981 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00435/1.341, allocations: 1.043 MB / 1.321 GB, free: 130.1 MB / 0.9981 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02707/1.368, allocations: 27.14 MB / 1.348 GB, free: 102.3 MB / 0.9981 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004276/1.372, allocations: 0.5575 MB / 1.348 GB, free: 101.7 MB / 0.9981 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003925/1.372, allocations: 151.9 kB / 1.348 GB, free: 101.6 MB / 0.9981 GB
Warning: Assuming fixed start value for the following 2 variables:
         node4.wyeToDelta.delta.phase[3].v[2]:VARIABLE(flow=false unit = "V" fixed = true )  "Voltage vector" type: Real [3,2]
         node4.wyeToDelta.delta.phase[2].v[1]:VARIABLE(flow=false unit = "V" fixed = true )  "Voltage vector" type: Real [3,2]
Warning: The initial conditions are over specified. The following 2 initial equations are redundant, so they are removed from the initialization_lambda0 system:
         0.0 = (-line2.i1[2]) - line2.i2[2] - line2.i3[2]
         0.0 = (-line2.i1[1]) - line2.i2[1] - line2.i3[1].
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 119
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (301):
 * Single equations (assignments): 298
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 3
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 2 systems
   {(1,3,100.0%), (10,44,70.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(10,44)}
Notification: Performance of prepare postOptimizeDAE: time 0.0009135/1.373, allocations: 402.1 kB / 1.349 GB, free: 101.2 MB / 0.9981 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005419/1.374, allocations: 201.6 kB / 1.349 GB, free: 101 MB / 0.9981 GB
Warning: The linear system: 
1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2]
2 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1]
3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2]
4 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1]
[
  -1.0 , 0.0 , 0.0 , 1.0 ;
  0.0 , 0.0 , 1.0 , -1.0 ;
  0.0 , -1.0 , 1.0 , 0.0 ;
  -1.0 , 1.0 , 0.0 , 0.0
]
  *
[
  line2.v1_p[1] ;
  line2.v2_p[1] ;
  line2.v2_n[1] ;
  line2.v1_n[1]
]
  =
[
  line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ;
  -transformer.conv2.V2[1] ;
  line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ;
  -loadRL.load1.v[1]
]
 might be structurally or numerically singular for variable line2.v1_n[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02353/1.397, allocations: 10.17 MB / 1.359 GB, free: 90.78 MB / 0.9981 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.914e-05/1.397, allocations: 28 kB / 1.359 GB, free: 90.75 MB / 0.9981 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.662e-05/1.397, allocations: 15.72 kB / 1.359 GB, free: 90.74 MB / 0.9981 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.453e-05/1.397, allocations: 15.95 kB / 1.359 GB, free: 90.72 MB / 0.9981 GB
Warning: The linear system: 
1 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2]
2 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1]
3 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2]
4 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1]
[
  1.0 , 0.0 , 0.0 , -1.0 ;
  0.0 , 0.0 , -1.0 , 1.0 ;
  0.0 , 1.0 , -1.0 , 0.0 ;
  1.0 , -1.0 , 0.0 , 0.0
]
  *
[
  line2.v2_n[1] ;
  line2.v1_n[1] ;
  line2.v1_p[1] ;
  line2.v2_p[1]
]
  =
[
  line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ;
  -loadRL.load1.v[1] ;
  line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ;
  -transformer.conv2.V2[1]
]
 might be structurally or numerically singular for variable line2.v2_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03091/1.428, allocations: 16.34 MB / 1.375 GB, free: 74.21 MB / 0.9981 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.539e-05/1.428, allocations: 8 kB / 1.375 GB, free: 74.2 MB / 0.9981 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.003183/1.432, allocations: 0.7411 MB / 1.375 GB, free: 73.46 MB / 0.9981 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.01705/1.449, allocations: 5.196 MB / 1.381 GB, free: 68.24 MB / 0.9981 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005005/1.449, allocations: 75.95 kB / 1.381 GB, free: 68.17 MB / 0.9981 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.03189/1.481, allocations: 27.24 MB / 1.407 GB, free: 40.45 MB / 0.9981 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.77e-06/1.481, allocations: 15.92 kB / 1.407 GB, free: 40.44 MB / 0.9981 GB
Warning: The linear system: 
1 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2]
2 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1]
3 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2]
4 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1]
[
  -1.0 , 0.0 , 0.0 , 1.0 ;
  0.0 , 0.0 , -1.0 , 1.0 ;
  0.0 , -1.0 , 1.0 , 0.0 ;
  1.0 , -1.0 , 0.0 , 0.0
]
  *
[
  line2.v2_p[1] ;
  line2.v1_p[1] ;
  line2.v1_n[1] ;
  line2.v2_n[1]
]
  =
[
  line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ;
  -transformer.conv2.V2[1] ;
  line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ;
  -loadRL.load1.v[1]
]
 might be structurally or numerically singular for variable line2.v2_n[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02238/1.504, allocations: 10.13 MB / 1.417 GB, free: 30.05 MB / 0.9981 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.001518/1.505, allocations: 0.7242 MB / 1.418 GB, free: 29.31 MB / 0.9981 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003892/1.505, allocations: 52 kB / 1.418 GB, free: 29.26 MB / 0.9981 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00341/1.509, allocations: 0.5148 MB / 1.418 GB, free: 28.75 MB / 0.9981 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0006827/1.51, allocations: 226.3 kB / 1.419 GB, free: 28.53 MB / 0.9981 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002008/1.51, allocations: 91.95 kB / 1.419 GB, free: 28.44 MB / 0.9981 GB
Notification: Performance of sorting global known variables: time 0.001177/1.511, allocations: 1.001 MB / 1.42 GB, free: 27.43 MB / 0.9981 GB
Notification: Performance of sort global known variables: time 1.41e-07/1.511, allocations: 0 / 1.42 GB, free: 27.43 MB / 0.9981 GB
Notification: Performance of remove unused functions: time 0.005387/1.516, allocations: 1.852 MB / 1.421 GB, free: 25.58 MB / 0.9981 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 34
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (165):
 * Single equations (assignments): 162
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 3
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 2 systems
   {(10,44,70.0%), (1,3,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(10,44)}
Warning: The linear system: 
1 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2]
2 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1]
3 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2]
4 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1]
[
  -1.0 , 0.0 , 0.0 , 1.0 ;
  0.0 , 0.0 , -1.0 , 1.0 ;
  0.0 , -1.0 , 1.0 , 0.0 ;
  1.0 , -1.0 , 0.0 , 0.0
]
  *
[
  line2.v2_p[1] ;
  line2.v1_p[1] ;
  line2.v1_n[1] ;
  line2.v2_n[1]
]
  =
[
  line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ;
  -transformer.conv2.V2[1] ;
  line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ;
  -loadRL.load1.v[1]
]
 might be structurally or numerically singular for variable line2.v2_n[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Notification: Performance of Backend phase and start with SimCode phase: time 0.02338/1.54, allocations: 10.8 MB / 1.432 GB, free: 14.54 MB / 0.9981 GB
Notification: Performance of simCode: created initialization part: time 0.02932/1.569, allocations: 14.39 MB / 1.446 GB, free: 72 kB / 0.9981 GB
Notification: Performance of simCode: created event and clocks part: time 1.003e-05/1.569, allocations: 0 / 1.446 GB, free: 72 kB / 0.9981 GB
Notification: Performance of simCode: created simulation system equations: time 0.01044/1.58, allocations: 4.391 MB / 1.45 GB, free: 11.64 MB / 1.014 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002147/1.582, allocations: 287.3 kB / 1.451 GB, free: 11.36 MB / 1.014 GB
Warning: The linear system: 
1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2]
2 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1]
3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2]
4 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1]
[
  1.0 , 0.0 , 0.0 , -1.0 ;
  0.0 , 0.0 , 1.0 , -1.0 ;
  0.0 , 1.0 , -1.0 , 0.0 ;
  -1.0 , 1.0 , 0.0 , 0.0
]
  *
[
  line2.v1_n[1] ;
  line2.v2_n[1] ;
  line2.v2_p[1] ;
  line2.v1_p[1]
]
  =
[
  line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ;
  -loadRL.load1.v[1] ;
  line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ;
  -transformer.conv2.V2[1]
]
 might be structurally or numerically singular for variable line2.v1_p[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Warning: The linear system: 
1 : line2.v1_n[1] - line2.v1_p[1] = line2.Z11[1] * line2.i1[1] - line2.Z11[2] * line2.i1[2] + line2.Z12[1] * line2.i2[1] - line2.Z12[2] * line2.i2[2] + line2.Z13[1] * line2.i3[1] - line2.Z13[2] * line2.i3[2]
2 : transformer.conv2.V2[1] = line2.v1_n[1] - line2.v2_n[1]
3 : line2.v2_n[1] - line2.v2_p[1] = line2.Z21[1] * line2.i1[1] - line2.Z21[2] * line2.i1[2] + line2.Z22[1] * line2.i2[1] - line2.Z22[2] * line2.i2[2] + line2.Z23[1] * line2.i3[1] - line2.Z23[2] * line2.i3[2]
4 : loadRL.load1.v[1] = line2.v1_p[1] - line2.v2_p[1]
[
  -1.0 , 0.0 , 0.0 , 1.0 ;
  0.0 , 0.0 , 1.0 , -1.0 ;
  0.0 , -1.0 , 1.0 , 0.0 ;
  -1.0 , 1.0 , 0.0 , 0.0
]
  *
[
  line2.v1_p[1] ;
  line2.v2_p[1] ;
  line2.v2_n[1] ;
  line2.v1_n[1]
]
  =
[
  line2.Z11[1] * line2.i1[1] + line2.Z13[1] * line2.i3[1] + line2.Z12[1] * line2.i2[1] - line2.Z11[2] * line2.i1[2] - line2.Z13[2] * line2.i3[2] - line2.Z12[2] * line2.i2[2] ;
  -transformer.conv2.V2[1] ;
  line2.Z21[1] * line2.i1[1] + line2.Z23[1] * line2.i3[1] + line2.Z22[1] * line2.i2[1] - line2.Z21[2] * line2.i1[2] - line2.Z23[2] * line2.i3[2] - line2.Z22[2] * line2.i2[2] ;
  -loadRL.load1.v[1]
]
 might be structurally or numerically singular for variable line2.v1_n[1] since U(4,4) = 0.0. It might be hard to solve. Compilation continues anyway.
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1063/1.688, allocations: 44.17 MB / 1.494 GB, free: 13.2 MB / 1.061 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003149/1.691, allocations: 2.845 MB / 1.497 GB, free: 10.32 MB / 1.061 GB
Notification: Performance of simCode: alias equations: time 0.005244/1.697, allocations: 1.653 MB / 1.498 GB, free: 8.668 MB / 1.061 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001769/1.698, allocations: 1.226 MB / 1.499 GB, free: 7.441 MB / 1.061 GB
Notification: Performance of SimCode: time 9.32e-07/1.698, allocations: 4 kB / 1.499 GB, free: 7.438 MB / 1.061 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1762/1.875, allocations: 102.1 MB / 1.599 GB, free: 1.711 MB / 1.154 GB
Notification: Performance of buildModelFMU: Generate platform static: time 13.01/14.89, allocations: 10.84 kB / 1.599 GB, free: 1.707 MB / 1.154 GB
(rm -f Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.pipe ; mkfifo Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.pipe ; head -c 1048576 < Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.pipe >> ../files/Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.sim & python3 -m fmpy simulate  --output-file Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD_res.csv --start-time 0 --stop-time 1 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 Buildings_latest_Buildings_Electrical_AC_ThreePhasesUnbalanced_Validation_IEEETests_Test4NodesFeeder_UnbalancedStepUp_YD.fmu > Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Validation.IEEETests.Test4NodesFeeder.UnbalancedStepUp.YD.pipe 2>&1)